Gabriel is the top scorer for Brazilian Serie A club Palmeiras this year with 13 goals in all competitions, reports Xinhua.
He is expected to be one of the first players picked in Brazil's squad for the Rio Olympic Games football tournament in August.
"I spoke with one of Bayern's scouts. And I previously had a conversation with somebody at Juventus. But they are only inquiries." Gabriel's agent, Cristiano Simoes, told Brazilian portal Lance on Thursday.
The 19-year-old has a release clause of 40 million euros ($45.2 million) written into his Palmeiras contract.
"It's not only the financial aspect that we're looking at," the agent said. "We're analysing projects, cities, the language, everything. He is not in a hurry. Right now we are focusing on the Brazilian championship."